Vehicle-brake.



R. HUFF. VEHICLE BRAKE. APPLICATION men JULY 16. 1909.

Patented July 27, 1915.

2 SHEETS-SHEET1.

R. HUFF. VEHICLEBRAKE.

' APPLICATlON HLED JULY 16, 1909.

Patented July 27, 1915.

W t 615W L p I RUSSELL HUEF, 0F DETROIT, MICHIGAN, ASSIGNOR .BY MESNE ASSIGNMENTS, TO.

PACKARD MOTOR CAR COMPANY, OF DETROIT, MICHIGAN, A CORPORATIQN OF MICHIGAN.

VEHICLE-BRAKE.

Specification of'Iietters Patent.

Patented July 27,1915.

Application filed July 16, 1909. Serial name.

To a 10/: um. 1'2, may concern:

Be it known that 1, Russian H'o'rr, a. citibrakes, and in particular to brakes of the.

type described in patent to Schmidt #824,151 June 26th, 1906. I The objects of this invention are to improve in general the construction of the ,brake, to provide means whereby it is in sured that the shoes will be moved out of engagement with the cooperating brake drum to provide a construction whereby the shoes may be. readily removed, and to provide an anti-rattling device for the brake shoes. I 4 The invention broadly stated consists in a brake drum which is adapted to be secured to the vehicle wheel, and inner and outer brake shoes which are arranged to be moved into braking engagement with the opposite sides of the drum. The upper outer brake shoe is provided with a spring for moving it out of engagement with the drum. An adjustable stop is also provided to limit this movement. The outer brake shoes are provided with integral flanges which are widened at the ends, and pivot pieces are brazed to these widened portions which receive the pivots for the toggle mechanism. The shoes are provided with segmental plates which extend inwardly toward the center of the brake drum. The support is provided with off-set plates forming slots or sockets and the plates are lined with leather or any other noise-deadening material. sockets and are engaged loosely by the walls thereof. In this way an anti-rattling device is provided. The inner brake shoes are extended inwardly forming lugs, which are engaged by a spreading cam to spread the inner shoes and move them into braking engagement with the drum. A bolt extended through these lugs has a spring mounted upon it to normally mbve the shoes into disengaging position. The brake shoes are mounted upon their pivots for endwise removal and are provided with lugs which corate with recesses formed in the support.

.The segmental plates enter these The lugs and recesses are in engagement when the brake shoes are in operative position; but when the drum is removed and the brake shoes are swung outwardly the lugs move out of engagement with the recesses and permit the endwise removal of the shoes from their pivots. V

In the drawings: Figure 1 is an.elevation of the brake showing the drum in section; Fig. 2 is a front elevation of the outer brake'shoes, parts of the mechanism being shown in section; Fig. '3 is a vertical section through the wheel and brake drum;

Fig. 4 is a section on the line 4 of Fig. 1;

and Fig. 5 is a section on the line 5 5 of Fig. l.

Referring to the drawings, the stationary rear axle tube which. has firmly secured to it the bracket or support 11, the uppe flat portion 1201 which forms the spring seat, bosses 13 being provided for the spring shackles. In the outer end of the support ll is the annular ball-bearing 14 for the outer end of the driving axle 15. A grease cup 14: is provided for the ball-bearing let. The rear driving wheel 16 issuitably keyed to the end of the axle section 15 in the usual manner. is secured to the rear wheel and is provided 'with-inn'or and outer braking surfaces.

V Upon the bracket 11 are mounted three arms 18,19 and 20. The arm 19 forms the anchor for the brake shoes and has mounted thereon a pair of pivots 21 for the outer brake shoes 22, which. form the outer brake band, and a pair of pivots 23 for the 10 designates The brake drum 17 inner brake shoes 24, which form the inner brake band. I v

The brake shoes 24 are mounted for endwise movement on the'pivots 23, and are provided with lugs 25 which engage recesses 27 formed in projections 26 mounted upon the bracketi19. lVhen the brake shoes are in operative position with the lugs 25 engaging the recesses, the-lugs 26, which are produced due to the formation of the r cesses 27, prevent the endwise removal of the brake shoes. Thepivots 23 are secured.

to the bracket 19 in the manner shown in Fig. 4, these pivots being provided with threaded shanks 28 upon which are screwed lock nuts 29. The brake shoes areprovided with inturried lugs 30 engaged by a spreading cam 311; .Which is operated through a p lever 32 connected to the brake operating lever. A bolt 33 extends through lugs and has mounted upon it a spring 3 which moves the shoes out of engagement with the drum. I

vVhen the drum 17 and the outer brake shoes 22 are removed, the inner brake shoes may he swung on their pivots until the lugs move out of engagement with the recesses 27, thereby permitting the brake shoes to be removed from the pivots 23 by an end- Wise movement. By means of this construction the,.usual,nutsand cotter pins are dispensed... .ii "It will be seen that the cooperatinglug 25 and recess 2? form a bayonet oiut.

3 Thefouter brake shoes 22 may be steel stampin'gs and are provided with side flanges &0 which flanges are widened atthe ends asshownat 4L Pivot pieces e2, 43 are brazed to thefiangeportions ll of the lower shoe an are centrally bored to receive a. pivot tending through the lever 45, .whichio m8 ne'er the links of the toggle thane. level The pp 'bmkg shoeiseimilarlyprovided with pivot pieces and centrally bored to fireceijveapivot-pin 48 provided with a transpivotpin igand is provided with a threadportion to receive the shank 50 of the h r to neotedf Tgleflink 51-, which is pivotally conthe lever 45 at 52. The pivot pin d8 is 'h in place by means of the shank 5G nzh itends through the transverse holster ined therein. By means of this con Jan-amen the brake shoes 22 may be ad- The'arm 20 is provided-Witha bracket 53 having an overhanging portion 54:. A. bolt 55 is connected to the upper brake shoe near its middle, extends throu "h the overhanging "portion 54 and is provi ed with lock nuts 57. A spring 56 is mountednpon the bolt 3 between the nuts and the overhanging portion Fri-and normally tends to hold the upper brake shoe out of engagement with the out of enga .justebl notprovided the upper brake shoe may move upwardly until it engages the overhanging portion 54; this may not be suflicient to disengagethe lower shoe. By providing an ade Stop the wear of the brake shoe may on com ensated for.

5 uminum dust shield 60 is suitably se an lid which is connected with the menses cured-to the bracket 11 and the arms 18, 19

and 910 mounted thereon. The outer hraire shoes 22 are provided with inwardly e a 1 tending segmental. plates 61, and the oust shield 60 has riveted thereto plates 62 hai ing oil-set portions 53 forming slots or re ceases. These segmental plates are suitably lined with leather linings 6t, 65 or any other noise-deadening lining. Edy means of the above construction the brake shoes are more or less guided in their movements, and noise due to lateral vibration is prevented. The spring 56 is always under tension and holds the upper brake shoe yieldingly in engage mentwith the adjustable stop. 58, agadthus provides an additional means for preventing rattling of the upper brake shoe.

o It is obvious that various changes may he made in the details of construction without departing from the spirit of this invention, and it is therefore to he understood that this invention is not to he limited to the specific constructions shown.

'Vlhat I claim is:

1. in a brake mechanism, the combination with ahrake drum, of a brake band rohperating therewith, said brake hand comprising a pair of brake shoes, a spring engaging one of the brake shoes near its middle point and operating to move it away from the drum, and an adjustable stop to limit the movement of the shoe.

2. In a brake mechanism, the combination with a brake drum, of a. brake hand 006perating therewith, said brake hand comprising a pair of brake shoes, a. bracket overhanging one of the shoes near its center, a bolt connected with the shoe and passing through the bracket, a spring on the bolt operating to THOVQ the hand away from the drum, and an adjustable stop mounted in the bracket to limit the movement of the shoe.

3. In a brake mechanism, the combination with a support and a relatively -otataole braking surface adjacent thereto, iii upper and lower brake shoes pivoted to said support, means for applying the shoes to the braking surface, a spring for withdrawing the upper shoe from said surface. and an adjustable step independent of said means forlimitin'g the Withdrawing action of the spring.

4. In a brake mechanism, the combination with a support, a relatively rotatable brake drum, a brake shoe pivoted to the support in operative relation 'vvith said drum, and means for applying said brake shoe, of a plate secured to said shoe and extending" to" ward the support, separated plates attachec to said support and forming a slot in which said first plate engages, and noise deadening linings on one of said plates.

5. In a brake mechanism the combination with a brake drum, of a brake hand cooperating thereiith, an anchor tor said band, and an anti-rattling device engaging said band at'a point removed from said anchor.

6. In a brake mechanism, the.combination I with a brake drum, of a brake band cooperating therewith, an anchor for said band, a lug on said band at a point removed from said anchor, and a socket engaged by said lug and cooperating therewith to form an anti-rattling device. 7

7. In a brake mechanism, the combination with a brake drum, of a brake band shoe cooperating therewith, an anchor for pivotally supporting said shoe at one end, a lug on said shoe near its free end, and a cooperating socket'for said lug.-

8. In a brake mechanism, the combination with a brake drum, of a brake band cooperating therewith, an anchor forsaid band,

an inwardly extending lug on said band at a point removed from said anchor, and a lined socket cooperating with said lug.

9; In a brake mechanism, the combination with a brake drum, of apair of brake shoes coiiperating therewith, a support for anchoring said shoes at one end, lugs on one of said shoes, and sockets on said support cooperating with said shoes to form an anti-rattlin device.

10. In a rake mechanism, the combination With a brake drum, of a brake band cooperating therewith, said brake bandcomprising a pair of brake shoes, an anchor for a said shoes, a bracket overhanging one of said shoes at a point removed from said anchor, a spring to move said shoe awaydrom said drum, and an adjustable stop on said bracket engag ng said shoe.

11. In a brake mechanism, the combination with a brake drum, of upperand lower brake shoes cooperating therewith, anchoring means for pivotally supporting said brake shoes at one end, means engaging the other ends of said brake'shoes for moving 

